/Engine/Source/Runtime/Core/Public/GenericPlatform/GenericPlatformMath.h
Store float to half (F16) converts with RTNE = round to nearest even values too large for F16 are stored as +-Infhttps://gist.github.com/rygorous/2156668float_to_half_fast3_rtne
static constexpr void StoreHalf ( uint16 * Ptr, float Value )